Senior Network Systems Engineer

Job Title: Senior Network Systems Engineer

Job Location: Durham, United States of America

Job Location Type: Home-based

Job Contract Type: Full time
Job Seniority Level:

As a Senior Network Engineer, you participate in the implementation, and support of complex hybrid network infrastructures across global environments. This role demands a strategic mindset and deep technical expertise to deliver high-impact projects that align with enterprise security standards, performance optimization goals, and scalability requirements. You will help define and drive the evolution of IQVIA’s global network ecosystem transforming it into a programmable, automated, and platform-agnostic infrastructure.

You will be responsible for planning, deploying, documenting, and maintaining both new (SoNIC, Cumulus) and existing (Cisco) network architectures in highly dynamic and secure environments. A strong understanding of Linux-based systems , network programmability , and infrastructure-as-code principles will be essential as you help build a globally consistent and scalable network foundation.

Key Responsibilities

- Support SDN solutions, focusing on Cisco ACI across multiple data centers.

- Integrate AI-driven network monitoring and predictive analytics.

- Serve as a senior technical advisor to Tier 2 engineers, providing mentorship and consultation.

- Provide expert-level support during major incidents, including root cause analysis and resolution planning.

- Translate Global Network Support (GNS) standards into actionable low-level designs, including hardware quoting and documentation.

- Partner with Mergers & Acquisitions (M&A) and Global Real Estate teams to integrate new acquisitions into IQVIA’s network standards

- Lead network buildouts, office restack implementations, and refresh initiatives

- Lead strategic network projects across departments, regions, and time zones.

- Automate implementations across platforms:
- Generate and deploy F5 configurations, Palo Alto firewall rules, and Cisco ACI policies through Ansible, Python, Terraform, and/or API-driven automation.

- Implement CI/CD pipelines to validate and roll out network and security changes safely and repeatably.

- Implement and support network segmentation strategies for zero-trust architectures and compliance mandates.

- Oversee incident response and escalation workflows, ensuring timely resolution and stakeholder communication.

- Maintain DNS (BIND), IPAM, and domain name services across enterprise environments with automation-first principles.

- Support branch office automation initiatives using Cisco DNA Center and other vendor platforms.

Required Skills and Expertise

- Extensive experience with software-defined networking technologies (Cisco ACI, SoNIC, Cumulus Linux, or equivalent), including the ability to:
- Deploy Cisco ACI fabric including spine-leaf topology, APIC controllers, and policy-based configurations.

- Configure multi-pod and multi-site Cisco ACI environments for scalability and redundancy.

- Implement L4–L7 service insertion using service graphs and contracts.

- In-depth understanding of Linux networking , kernel-based switching , and open-source routing stacks (FRR, BIRD, and Quagga).

- Proven experience developing and deploying infrastructure-as-code for network and security platforms (Ansible, Terraform, Git, YAML, JSON).

- Experience automating configurations and policy enforcement across:
- Cisco ACI and DNA Center

- F5 load balancers (iControl REST, AS3 templates)

- Palo Alto firewalls and Panorama (REST and XML APIs)

- Proficiency in routing and overlay technologies (BGP, EIGRP, VXLAN/EVPN, OSPF, etc) and switching.

- Experience in SDWAN deployments and support.

- Understanding of network segmentation, zero-trust access, and security frameworks.

- Familiarity with cloud networking platforms including AWS Direct Connect, Azure ExpressRoute, and hybrid/on-prem cloud solutions.

- Experience with packet capture an